Your 13-Week Journey

This progressive training plan takes you from zero to 14,000 feet.

About This Program

This progressive 13-week training plan prepares you to summit the easiest 14ers like Mount Sherman, Handies Peak, or Quandary Peak. The program builds your running fitness gradually, avoiding the common pitfalls of faster progressions, while preparing you for the unique demands of high-altitude hiking.

Brand new to fitness? Start with our couch to 14er training plan, which walks beginners through the full 13 weeks with a low-impact baseline.

Skipping the training is a mistake. Read what I wish I knew before my first Colorado 14er for the lessons I learned the hard way.

Remember: Repeat weeks as needed. Listen to your body. This is a guide, not a rigid schedule.

When Should You Summit?

This 13-week plan assumes you will summit in July through early September. These months offer the safest conditions for beginners with minimal snow and the most predictable weather.

Important: Attempting a 14er in June or late September significantly increases difficulty due to snow conditions. Winter attempts (October through May) require mountaineering skills and are not recommended for beginners.

Learn when to schedule your summit attempt

Week	Focus	Mon	Tue	Wed	Thu	Fri	Sat	Sun	Details
1	Foundation Week Build walking base	Walk	Stairmaster	Walk	Hill Repeats	Walk (Optional Ruck)	Walk	Rest/Recovery	View Details
2	Building Momentum Continue walking foundation	Walk	Stairmaster	Rest/Recovery	Hill Repeats	Walk (Optional Ruck)	Walk	Rest/Recovery	View Details
3	Introduce Running Begin run/walk intervals	Run (Short)	Stairmaster	Rest/Recovery	Hill Repeats	Walk (Optional Ruck)	Run (Long)	Rest/Recovery	View Details
4	Build Endurance Increase running intervals	Run (Short)	Stairmaster	Rest/Recovery	Hill Repeats	Walk (Optional Ruck)	Run (Long)	Rest/Recovery	View Details
5	Recovery Week Active recovery and adaptation	Run (Short)	Rest/Recovery	Rest/Recovery	Rest/Recovery	Walk	Hike	Rest/Recovery	View Details
6	Progressive Running Equal run/walk intervals	Run (Short)	Stairmaster	Rest/Recovery	Hill Repeats	Ruck	Run (Long)	Rest/Recovery	View Details
7	Running Dominance More running than walking	Run (Short)	Stairmaster	Rest/Recovery	Hill Repeats	Ruck	Run (Long)	Rest/Recovery	View Details
8	Recovery Week Mid-program recovery	Run (Short)	Rest/Recovery	Rest/Recovery	Rest/Recovery	Walk	Hike	Rest/Recovery	View Details
9	Continuous Running Longer continuous run blocks	Run (Short)	Stairmaster	Rest/Recovery	Hill Repeats	Ruck	Run (Long)	Rest/Recovery	View Details
10	Peak Running Maximum running volume	Run (Short)	Stairmaster	Rest/Recovery	Hill Repeats	Ruck	Run (Long)	Rest/Recovery	View Details
11	Recovery Week Pre-taper recovery	Run (Short)	Rest/Recovery	Rest/Recovery	Rest/Recovery	Walk	Hike	Rest/Recovery	View Details
12	Final Preparation Peak fitness week	Run (Short)	Stairmaster	Rest/Recovery	Hill Repeats	Ruck	Run (Long)	Rest/Recovery	View Details
13	Summit Week Travel, acclimate, and summit!	Run (Final)	Travel to Elevation	Acclimation Walk	Light Jog	Travel to Trailhead and Camp	SUMMIT DAY!	Celebrate and Rest	View Details

01

Foundation phase: weeks 1 to 4

Building your base from the ground up

The foundation phase is not about pushing hard. It's about teaching your body how to move under load for long stretches of time, without falling apart. Most people who fail on a 14er don't fail because they couldn't run fast enough. They fail because they weren't ready to walk uphill for five or six hours straight. That's what these four weeks are building toward. If you want to add strength training during Foundation, keep it light and bodyweight-focused.

What the workouts look like

Your main tool in weeks 1 and 2 is walking. You'll go out for 20 minute walks at a steady conversational pace, which means you can hold a full sentence without gasping, plus one longer 30 minute walk on Friday. If you're huffing after one minute of flat ground, slow down. Speed isn't the goal. Time on your feet is the goal. Week 3 swaps two of those walks for your first run/walk intervals: 45 seconds of easy jogging between long walking breaks on Monday, and 1 minute jogs on Saturday. By the end of week 4 you're running 2 minutes at a time. Friday stays a walk, and you can carry an optional 5 pound pack if you want to get used to the feel of it.

Once a week you'll do a stairmaster interval session, alternating 1 minute easy with 1 minute harder. It starts at 10 minutes in week 1 and builds to 17 minutes by week 4. The stairmaster is one of the best training tools for 14er prep because it mimics the exact movement pattern of climbing: a continuous upward step cycle with no real rest between strides. "Harder" means breathing harder while still being able to talk in short sentences. You're not trying to max out the machine. You're trying to stay moving for the full session without stopping. If your gym doesn't have a stairmaster, a stadium with bleachers or any stairwell you can loop works just fine.

One day a week is for hill repeats. Find a hill with a consistent moderate grade and walk 1/4 mile up it at a steady effort. Walk back down, then repeat. You'll do 3 repeats in weeks 1 and 2 and 4 repeats in weeks 3 and 4. The uphill should feel like work. The downhill is your recovery.

Weekly schedule pattern

Monday is a 20 minute walk in weeks 1 and 2 and a run/walk interval session in weeks 3 and 4. Tuesday is a stairmaster session. Wednesday is an easy 20 minute walk in week 1 and a full rest day from week 2 on, and that rest day matters, so don't skip it. Thursday is hill repeats. Friday is a 30 minute walk that grows to 35 minutes in week 3. Saturday is a 20 minute walk in weeks 1 and 2 and your longer run/walk session in weeks 3 and 4. Sunday is rest.

Nutrition basics

Here's something people get wrong all the time: they start a training plan and decide it's also a good time to cut calories. Don't do that. Your body needs fuel to adapt. If you're under-eating while also adding training load, you'll feel exhausted within two weeks and you'll blame the program. It's not the program. It's the fuel deficit. Eat enough carbs to support the work you're doing: rice, oats, bread, potatoes, fruit.

Drink water throughout the day, not just during workouts. A good baseline is half your bodyweight in ounces per day. During your longer Saturday walks, bring water with you and sip on it the whole time. You don't need sports drinks or gels for 20 or 30 minute walks. Plain water is enough. The habit of staying hydrated is what you're building now, because at altitude on summit day, dehydration will shut you down faster than any fitness deficit.

Common mistakes

Going too fast is the most common mistake. People feel good in week one and turn their easy walks into something competitive. Then week two hits and their legs are wrecked and they miss two workouts. Keep the easy days easy. The second mistake is skipping rest days because the workout felt too short. Rest days are not optional. That's when your body adapts to the stress you've given it.

The third mistake is wearing the wrong shoes. You don't need trail runners or hiking boots for the foundation phase, but you do need shoes with real support and cushioning. If you're doing stairmaster sessions in old cross-trainers with no life left in them, your feet and knees will let you know by week two. Not sure what you need? Check the beginner gear list for recommendations.

What to expect

Week one your legs will be sore. That's normal. Week two the soreness starts to back off. Week three brings your first runs, which will feel awkward, but most people also notice a real shift: the walks that felt long in week one feel routine, and the stairmaster sessions don't leave you gasping. By week four you should be able to complete every session without dreading it, which is the signal that you're ready to move forward.

If you completed every session in a week, move forward. If you missed two or more sessions, repeat the week. If you're feeling pain rather than soreness, something sharp or localized in a joint, back off and give it a few extra days. There's no shame in spending five weeks in the foundation phase instead of four.

02

Build phase: weeks 5 to 8

Adding intensity and vertical gain

You've spent four weeks building a base. Your legs know what uphill work feels like, your lungs have started to adapt, and you've stopped dreading the Saturday runs. The Build Phase opens with a recovery week, then keeps everything from Foundation and adds intensity, load, and time on your feet.

What changes from Foundation

Three things shift during weeks 5 through 8. First, your run/walk intervals tip toward running, from equal run and walk time in week 6 to more running than walking by week 7. Second, your Friday walk becomes a required ruck with a 10 pound pack. Third, your stairmaster sessions and hill repeats get longer. None of these changes are dramatic on their own, but together they add up to a harder training week. Your body is ready for it. The Foundation phase prepared your tendons, joints, and connective tissue, which adapt slower than your cardiovascular system.

Week 5: the recovery week

Week 5 looks like a step backward. The volume drops, the intensity backs off, and you're going to feel like you should be doing more. Don't. This is a deliberate recovery week. You just completed four weeks of progressive training, and your body needs time to absorb those adaptations before taking on more. During week 5 you do one easy run/walk session on Monday, then take Tuesday, Wednesday, and Thursday off. The stairmaster and hill repeats are skipped. Friday is an easy 30 to 40 minute walk with no pack, and Saturday is an easy 30 minute hike instead of a run.

Run/walk intervals

You started run/walk intervals in week 3, and in week 6 they take a big step. Monday is 2 minutes of running and 3 minutes of walking, repeated 6 times. Saturday is 2.5 minutes of running and 2.5 minutes of walking, which is your first session with equal run and walk time. You're not trying to run fast. The walking break is part of the workout, not a failure. This format lets you accumulate more running volume than continuous running would, and it trains your body to recover while still moving, which is what a long summit day requires.

In week 7 the runs get longer again. Saturday is 3 minutes of running and 2 minutes of walking, so for the first time you run more than you walk. Week 8 keeps that Saturday structure for one easy Monday session and drops everything else back to recovery.

Rucking with a weighted pack

The Friday ruck becomes required in week 6 with a 10 pound pack, up from the optional 5 pounds in Foundation. Load it with water bottles, books, whatever you have. The ruck is 40 minutes in week 6 and 45 minutes in week 7 at a conversational pace. The pack gets heavier in the Peak phase. Rucking loads your hips, knees, and ankles under a weight similar to what you'll carry on summit day. It also teaches you how your pack fits and where it digs in before you're 8 miles from the trailhead. For a full breakdown of ruck training, read Rucking 101.

Nutrition for a harder training load

You're burning more calories in the Build Phase, and you need to eat more. Add a real pre-workout meal about 90 minutes before longer sessions: oatmeal with eggs, a banana with peanut butter, whatever works. Electrolytes matter more now too. Add an electrolyte packet to your water on workout days. Cramping on a training hike is annoying. Cramping on a 14er at 13,000 feet is a real problem.

Common mistakes

Ramping up too fast is the most common mistake. You feel good in week 6, so you add more weight to the ruck, make the runs longer, and turn an easy walk into an epic. Then week 7 hits and your knees ache. Stick to the progression. The plan is designed to make you feel undertrained, not overtrained.

If you haven't started wearing your hiking boots on your Friday rucks, start now. A blister during the Build Phase is annoying. A blister on summit day can end your hike before you get above treeline. This is also a good time to start researching your target peak. Beginner-friendly options like Quandary Peak or Mount Bierstadt are solid first summits.

What to expect

By the end of week 7, things start feeling different. The run intervals that felt hard in week 6 feel manageable. The ruck walks are uncomfortable but doable. Somewhere between week 5 and week 7, the question stops being "can I do this" and becomes "I'm doing this." Week 8 is another recovery week. Cut volume, back off intensity, and let your body consolidate everything you've built.

03

Peak phase: weeks 9 to 12

Maximum effort before the taper

Weeks 9 through 12 are where the training gets real. This is the highest-volume, most demanding stretch of the entire plan. Your body is doing more than it's ever done. By the time you come out the other side, you'll have a level of confidence that no amount of reading can give you.

What the workouts look like

Your run blocks keep stretching. Week 9 has 4 and 5 minute runs with short walking breaks, week 10 builds to two 10 minute blocks, and week 12 finishes with a 20 minute run and a 10 minute run in one session, which is 30 minutes of running. You're running at an easy to moderate pace, building the aerobic base that carries you up a 14,000-foot mountain when your legs are tired. Ruck weight goes up to 15 pounds in week 9 and 20 pounds in week 12, and the ruck grows from 50 minutes to 60 minutes. Load your pack the way you'd load it for summit day: water, food, layers, a first aid kit. The weight should be distributed the same way it will be on the mountain.

Hill repeats get more reps. You did 5 in week 6 and 6 in week 7. Week 9 holds at 6, week 10 peaks at 8, and week 12 lets you choose between 6 and 8 based on how your legs feel. Stairmaster sessions climb from 25 minutes to 30 minutes. You want to finish these weeks tired.

Test your gear now

Use your 20 pound ruck in week 12 as a full gear rehearsal. Wear the exact boots you'll wear on summit day. Use the exact pack. Bring the layers you're planning to bring. Eat the food you're planning to eat on the mountain. If something doesn't work, you want to find out on a training ruck, not at 13,500 feet with a storm building. Use the gear checklist to make sure you're not missing anything, and review layering for alpine conditions before you pack.

Eating enough is harder than you think

At peak training volume, your calorie needs go up and a lot of people undereat without realizing it. You'll know you're underfueling if your workouts feel flat two or three days in a row, you're not sleeping well despite being tired, or you're getting irritable for no reason. The fix: eat more, especially after long workouts. A recovery meal within 30 to 45 minutes of finishing a hard session makes a real difference.

Common mistakes

There's a difference between discomfort and pain. Discomfort is your lungs burning on a hill repeat. Pain is a sharp sensation in your knee that shows up every time you go downhill. Pushing through real pain during peak training is how you end up injured two weeks before your summit date.

If you're choosing between an extra workout and 8 hours of sleep, take the sleep. Your body rebuilds during rest, not during the workout itself.

What to expect

Weeks 9 and 10 will feel heavy. Your legs will be tired going into workouts, and you might wonder if you're getting fitter or just worn down. Both things are true. By week 12, most people notice a shift. The workouts that felt crushing two weeks ago start to feel manageable. That's what adaptation feels like. Week 11 is a recovery week before the taper. Take it.

04

Taper and summit: week 13

Rest, acclimate, and reach the top

What tapering means

After 12 weeks of building fitness, week 13 is not the time to cram in more miles. Tapering means you cut your training volume so your body can absorb all the work you've done and arrive at the trailhead feeling fresh. Your fitness is already in place. Nothing you do in week 13 will add to it, but a bad week can take from it. Rest is the training now.

The week 13 schedule

Monday is your final short run, 20 to 30 minutes at an easy pace. Tuesday you travel to elevation. If your target peak is in Colorado, that means driving to a town at 6,000 feet or higher, such as Fairplay, Leadville, or Breckenridge, and spending the night. Wednesday is an easy 30 to 45 minute acclimation walk around town. Thursday is a light 15 to 20 minute jog, or a short hike at altitude if you prefer. Friday you drive to the trailhead, set up camp, and walk around lightly for 10 to 20 minutes to scope out the trail. Saturday is summit day. Sunday is rest.

Why acclimation takes 2 to 3 days

If you live at sea level and drive to a 14er trailhead the same morning, you're setting yourself up for a rough day. Your body needs time to adjust to lower oxygen levels. Two to three nights at elevation before summit day makes a real difference in how you feel above treeline, and this schedule gives you four: Tuesday through Thursday in town and Friday at the trailhead.

Altitude sickness shows up as headache, nausea, dizziness, and fatigue that's out of proportion to your effort. Mild symptoms are common and resolve with rest and hydration. If symptoms get worse instead of better, or if someone in your group is confused or struggling to walk straight, descend right away. Altitude sickness does not improve by pushing through it. Read more in our altitude sickness prevention guide.

Summit day

Start between 3 and 4 a.m. Afternoon thunderstorms are a regular occurrence above treeline in Colorado from late June through August. An alpine start gives you a summit window between 7 and 9 a.m., which puts you on your way down before the sky turns dangerous.

Pack your bag the night before: headlamp with fresh batteries, at least 2 to 3 liters of water, enough food for the whole day, a warm mid-layer, a waterproof shell, gloves, a hat, sunscreen, a first aid kit, and a map or downloaded GPS track. Trekking poles are worth bringing. The descent is hard on your knees and the poles help more than you'd expect.

Pace yourself from the first step. The most common mistake on summit day is starting too fast because you feel good and the trail is easy at first. Above treeline, take a rest every 30 to 45 minutes. Sit down, eat something, drink water. You're not losing time, you're managing your energy.

Weather above treeline

If you see lightning or hear thunder, turn around regardless of how close the summit looks. Plan to be off the summit by noon, no exceptions. The summit will still be there. Being caught on an exposed ridge in a lightning storm is life-threatening and it happens to experienced hikers who thought they had more time. Familiarize yourself with Colorado 14er weather patterns before summit week.

The summit and after

When you get there, take your photo, eat something, drink water, and start paying attention to the sky and your energy. Don't linger for more than 10 or 15 minutes. The descent is half the work. Your legs will be tired, the rocks will be loose in places, and your focus will start to slip. Most summit day injuries happen on the way down.

When you get back to the trailhead, eat a real meal, get off your feet, and drink more water than you think you need. Thirteen weeks of training and a 14,000-foot summit is not a small thing. When you're ready, the next one will be waiting.